Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-08-04
2010-06-22
Aulakh, Charanjit S (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C546S038000
Reexamination Certificate
active
07741487
ABSTRACT:
A process for preparing quaterrylene-3,4:13,14-tetracarboximides of the general formula Iin whichR, R′ are each independently hydrogen or optionally substituted C1-C30-alkyl, C5-C8-cycloalkyl or aryl or hetaryl;which comprises reacting a perylene-3,4-dicarboximide of the general formula IIain the presence of a base-stable, high-boiling, organic solvent and of an alkali metal base or alkaline earth metal base, with a perylene-3,4-dicarboximide of the general formula IIbin which X is hydrogen, bromine or chlorine.
REFERENCES:
patent: 195 12 773 (1996-10-01), None
patent: 102 33 955 (2004-06-01), None
patent: 0 596 292 (1994-05-01), None
Heinz Langhals, et al., “A Two-Step Synthesis of Quaterrylenetetracarboxylic Bisimides—Novel NIR Fluorescent Dyes”, Tetrahedron Letters, vol. 36, No. 36, XP 004027248, pp. 6423-6424, 1995.
Heribert Quante, et al., “Quaterrylentetracarbonsaurediimide”, Angewandte Chem., vol. 107, No. 12, pp. 1487-1489, 1995.
Suk-Wah Tam-Chang, et al., “Synthesis and Studies of the Properties of a Liquid-Crystalline Quaterrylenebis (Dicarboximide) by 1H NMR and UV-VIS Spectroscopies”, J.Org. Chem., vol. 69, pp 2719-2726, 2004.
Bidlingmaier Hermann
Blaschka Peter
Boehm Arno
Koenemann Martin
Krieger Matthias
Aulakh Charanjit S
BASF - Aktiengesellschaft
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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